<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>计算器</title>
    <style>
        body{
            text-align: center;
            padding-top: 100px;
        }
    </style>
</head>
<body>
<h1>简单计算器</h1>
<p>
    整数1: <input type="text" id="one">
</p>
<p>
    整数2: <input type="text" id="two">
</p>
<p>
    <button onclick="up(1)">+</button>
    <button onclick="up(2)">-</button>
    <button onclick="up(3)">*</button>
    <button onclick="up(4)">/</button>
</p>
<p>
    结果: <input type="text" id="zhi">
</p>
<p></p>
<script src="js/script.js"></script>
</body>
</html>